Development of protection system for Autonomous Demand Area Power System - Demonstration test of isolated operation methods for non-fault section in distribution line fault

We are promoting a study of the Autonomous Demand Area Power System (ADAPS) that is highly efficient power distribution system. The purpose of the ADAPS is to establish smooth introduction and effective use of the distributed power generation (DG). In the research of ADAPS, as for utilization technique of DG, isolated (without connection by ac line) operation method of nonfault section in distribution line fault or outage is being developed. In this paper, we propose an uninterrupted power supply method of 6.6kV non-fault section using the LPC targeting 6.6kV distribution line and demonstrate the fault operation method of the protection system for ADAPS.